CacheFlushCommand was using features from PHP 5.6 but the lowest supp…

[iainmckay]

Hi guys,

The lowest supported PHP version in composer.json is PHP 5.5 but CacheFlushCommand is using array constants which aren't supported until PHP 5.6.

This PR adds a fix.

[codecov-io]

Current coverage is 21.81%

Merging #51 into master will decrease coverage by -0.13% as of d5a027a

@@            master     #51   diff @@
======================================
  Files           18      18       
  Stmts          711     715     +4
  Branches         0       0       
  Methods         82      83     +1
======================================
  Hit            156     156       
  Partial          0       0       
- Missed         555     559     +4

Review entire Coverage Diff as of d5a027a

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[cryptiklemur]

Thanks! Can you fix the one style issue, and then I can merge it.

[iainmckay]

Done

[cryptiklemur]

Thanks :)

[Nyholm]

I did not know. Thank you!

[iainmckay]

I think most sane folk are on 5.6 now so it's pretty easy to miss.

It could be worth setting your IDE/Editor's minimum PHP version to 5.5 while working on this. I use PhpStorm and it highlights these sorts of issues.